The government is planning to start a ______ against smoking, as a response to public demand.
Her ________ look suggested that she was very _______ with the answer.
This book is well worth _______. Would you like to buy one?
I have bought two ball pens , _______ writes well.
------Why do you turn back?------ Oh, the bridge ahead_______.
People in the west make_______ a rule to buy Christmas presents for their relatives and friends.